Gaiden 

A side story or a spinoff of of a published work. It is not considered as a prequel or a sequel. Some gaidens are just stories retold from another character's perspective, or a flashback.

In a gaiden of Dragon Knights, by Mineko Ohkami, Rune has a nightmare of everyone becoming crossdressers.

Gaiden by Miyaviya August 25, 2008

Ninja Gaiden 2 

Awesome game where you go around killing ninjas, dragons and fiends with ninja weapons and fireballs (there are actually several different types of "ninpo"). It is the sequel to Ninja Gaiden for the Xbox (obviously), and you play as Ryu Hayabusa. It is also insanely hard and will require a lot of skill and patience, especially on Path of the Master Ninja, or even Path of the Mentor.

<BLIZZARDRULZ11216> I CAN'T DO IT, IT'S COMPLETELY IMPOSSIBLE, IMMA GO PLAY WOW CUZ IT R FUNNER!!11

<MasterNinja2983> ...Ninja Gaiden 2 takes a lot of skill. It's a good game, maybe you just need more practice.

<BLIZZARDRULZ11216> NO, IT'S PHYSICALLY IMPOSSIBLE!

Ninja Gaiden 2 by Xtreme2252 October 13, 2009

Ninja Gaiden Black

The video game equivalent of natural selection.

If you're one of those whiny adolescent morons who threatens complete strangers with violence over Xbox Live despite the fact you haven't even got hairs on your chin, don't play Ninja Gaiden Black. The sudden jolt back to reality may annihilate you.

Ninja Gaiden Black by Muttering Master March 8, 2007

Ninja Gaiden

Ninja Gaiden is the long-running Tecmo action series of video games. Originating as an arcade brawler, the series' most notable titles on home consoles are the three titles for the Nintendo Entertainment System and the recent Xbox title (and its rerelease titled "Ninja Gaiden Black"), which was the first Ninja Gaiden title in over a decade.

The last title especially is a particularly awesome game, the kind of game that isn't afraid to kick your ass (but without cheating you, because cheating is for wimps and commies). It's the type of game that the disgraceful "casual gamer" will give up on because it's "too hard," but anyone with the proper combination of brains and balls can't get enough of such an awesome game. In fact, if the term "too hard" exists in your vocabulary, you have no brains nor balls.

Ninja Gaiden is so sweet you'll want to crap your pants...in a good way. That is, unless you suck at video games and life.

Ninja Gaiden by Paco Belmondo September 15, 2005

Ninja Gaiden

Ninja Gaiden n. One of the greatest sidescrolling hack n' slash videogame series' ever to grace the Nintendo Entertainment System. And it stars a NINJA!! 'Nuff said. (Note: Not to be confused with the newly updated 3D version for the X Box; we're talking old-school here!)

Billy: "Hey! Wanna come outside and play soccer?"

Serious Ninja Gamer: "Not now, jackass! I'm almost up to level 7-3 in NINJA GAIDEN!

Ninja Gaiden by Mr. Pirate May 26, 2004

Ninja Gaiden

Ninja Gaiden - One of the most hardest and ownage Xbox games to date.

Person One: "Hey, wanna come over and play Ps2?!"
Person Two: "Bugger off ya jock strap, I'm owning these Froobs!"

Ninja Gaiden by Ryu Hayabusa June 14, 2004

Sexy Commando Gaiden: Sugoiyo

The name of the anime series starring a boy who meets a guy named Masarusan, who has a fighting style called, "The Sexy Commando".

To do the Sexy Commando, Masarusan unzips his pants (That's right kiddies) to distract the opponent. Then, he goes at them, violently attacking them with his fist. Sometimes he likes to gross his opponent out by having pigeons fly out of his pants.

Sexy Commando Gaiden: Sugoiyo by Alexi December 23, 2003